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Finding the Fourth Proportional to 896.44, 1,236.03 and 672.65

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Solution

The fourth proportional to 896.44, 1,236.03 and 672.65 is: 927.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.44 : 1,236.03 = 672.65 : x
  2. Step 2: Convert to fraction form
    896.44/1,236.03 = 672.65/x
  3. Step 3: Cross multiply
    896.44x = 1,236.03 × 672.65
  4. Step 4: Simplify right side
    896.44x = 831,424.14
  5. Step 5: Solve for x
    x = 831,424.14/896.44
  6. Step 6: Final answer
    x = 927.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.